1. Introduction
This manual provides essential information for the safe installation, operation, and maintenance of the BANNER ENGINEERING ES-UA-5A (66091) Safety Relay Module. This module is designed for use in safety circuits, specifically for E-Stop, Rope Pull, and Interlock applications.
Read this manual thoroughly before installation and operation to ensure proper functionality and to prevent potential hazards.
2. Safety Information
WARNING: Failure to follow these safety instructions could result in serious injury or death.
- Installation and maintenance must be performed by qualified personnel only.
- Always disconnect power before working on the module or associated wiring.
- Ensure all wiring conforms to local and national electrical codes.
- Do not bypass or defeat any safety functions of this device.
- Regularly inspect the module for damage or signs of malfunction.
This safety relay module is intended to be part of a safety control system. The overall safety system design must comply with relevant safety standards.
3. Product Overview
The ES-UA-5A (66091) is a safety relay module designed to monitor safety devices such as E-Stop buttons, rope pull switches, and interlock switches. It features multiple safety outputs and auxiliary outputs for system integration.
Figure 1: BANNER ENGINEERING ES-UA-5A Safety Relay Module. This image displays the compact red and black module, highlighting its terminal blocks for electrical connections.
Key Features:
- Input Voltage: 115 VAC / 12-24 VDC
- Power Consumption: 4 W
- Safety Output: 4 Normally Open (NO) contacts, 6 A
- Auxiliary Output: 1 Normally Closed (NC) contact, 5 A and 2 Solid-State outputs, 0.1 A
- Applications: E-Stop, Rope Pull, Interlock
4. Specifications
| Parameter | Value |
|---|---|
| Model Number | ES-UA-5A (66091) |
| Input Voltage | 115 VAC / 12-24 VDC |
| Power Consumption | 4 W |
| Safety Output | 4 NO, 6 A |
| Auxiliary Output | 1 NC, 5 A and 2 Solid-State, 0.1 A |
| Contact Type | Normally Closed, Normally Open |
| Current Rating (Safety) | 6 Amps |
| Operation Mode | Automatic |
| Coil Resistance | 250 Ohms |
| Product Dimensions | 4.8 x 1.8 x 4.8 inches |
| Weight | 1.06 Pounds |
| Manufacturer | BANNER ENGINEERING |
5. Setup and Installation
Proper installation is critical for the safe and reliable operation of the ES-UA-5A module. Refer to the wiring diagrams provided with the product for specific connection details.
Installation Steps:
- Mounting: Mount the module securely in an appropriate enclosure, ensuring adequate ventilation and protection from environmental factors.
- Power Connection: Connect the 115 VAC or 12-24 VDC power supply to the designated terminals. Verify correct voltage and polarity.
- Safety Device Inputs: Wire E-Stop buttons, rope pull switches, or interlock switches to the safety input terminals as per the application's safety circuit design.
- Safety Outputs: Connect the 4 NO safety outputs to the control circuit of the machinery to be safeguarded. These outputs will de-energize when a safety input is activated.
- Auxiliary Outputs: Connect the 1 NC and 2 Solid-State auxiliary outputs for non-safety related signaling, such as status indication to a PLC or HMI.
- Grounding: Ensure proper grounding of the module and the entire system to prevent electrical hazards and ensure signal integrity.
- Verification: After wiring, perform a thorough check of all connections for correctness and security.
6. Operating Instructions
Once installed and wired correctly, the ES-UA-5A module operates automatically to monitor the connected safety devices.
Normal Operation:
- When all connected safety devices are in their safe (closed) state, the safety outputs (4 NO) will be energized, allowing the machinery to operate.
- The auxiliary outputs will reflect the system status as configured.
Safety Event:
- If an E-Stop button is pressed, a rope pull switch is activated, or an interlock switch is opened, the safety inputs to the module will change state.
- The ES-UA-5A module will immediately de-energize its safety outputs, stopping the controlled machinery.
- The auxiliary outputs will also change state to indicate the safety event.
Resetting the Module:
After a safety event, ensure that the cause of the event has been resolved and all safety devices are returned to their safe state. The module will then automatically reset, re-energizing the safety outputs, provided the "Operation Mode" is set to Automatic (as per specifications).
7. Maintenance
The ES-UA-5A Safety Relay Module is designed for minimal maintenance. However, periodic checks are recommended to ensure continued safe operation.
- Visual Inspection: Regularly inspect the module for any signs of physical damage, loose connections, or discoloration.
- Functionality Test: Periodically test the entire safety circuit, including the ES-UA-5A module and all connected safety devices, to confirm proper operation. This should be done according to your facility's safety procedures and relevant standards.
- Cleaning: If necessary, clean the exterior of the module with a soft, dry cloth. Do not use abrasive cleaners or solvents.
Any repairs or internal servicing must be performed by BANNER ENGINEERING authorized personnel only.
8. Troubleshooting
This section provides guidance for common issues encountered with the ES-UA-5A module. For problems not listed here, contact BANNER ENGINEERING technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Safety outputs do not energize. |
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| Module indicators are off. |
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| Auxiliary outputs not functioning. |
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9. Support and Contact Information
For technical assistance, product inquiries, or to report issues, please contact BANNER ENGINEERING directly.
- Manufacturer: BANNER ENGINEERING
- Refer to the official BANNER ENGINEERING website for the most current contact details and support resources.







